855773667-LEED-v5-O-M-Reference-Guide-Launch-Edition-1 - Page 254

Extracted Content

Equation 1. Raw score 𝑅 𝑅𝑅 𝑠 𝑠 𝑠𝑠 (𝑝 𝑝𝑝 𝑎 𝑎 𝑎 𝑎 𝑎 𝑖 𝑖 ) = 𝑤 𝑤 ℎ𝑡 𝑡 𝑓 𝑓 𝑓 × 𝑎 𝑎 𝑎 𝑎 𝑎 𝑙 𝑙𝑙𝑙

Once all raw scores are determined, teams will use the total cumulative value of all raw scores and determine the level of achievement for the audit, using Equation 2.

Equation 2. Level of achievement

Equation 1. Raw score

[ 𝑎] [𝑎][ 𝑟] [𝑟][ 𝑠] [𝑠] [𝑠] 𝐿 𝐿 𝐿𝐿= [𝛴]

100

Path 2. Cleaning Surface Testing Audit

100

The ISSA Clean Standard provides details on the cleaning surface testing audit process. Using guidance from Section 4. Protocol for Measuring and Monitoring Cleaning Effectiveness, Custodial, teams must develop audit forms, establish the audit process, and document the level of cleanliness for the facility, using the levels “effective cleaning,” “needs improvement,” and “ineffective cleaning.”

ATP meters ATP, or adenosine triphosphate, is an enzyme found in living cells. ATP presence on surfaces is an indicator of bacteria and other live pathogens. Therefore, testing surfaces for the presence of ATP is an effective way to determine cleanliness. [113]

ATP testing consists of using handheld meters to determine the amount of ATP remaining on a surface after cleaning. Collect samples by swabbing multiple surfaces and using an ATP meter for the analysis. ATP meters measure hard, nonporous surfaces and cannot be used to measure surface cleanliness of surfaces such as carpeted floors and grout.

Surfaces to test Include the following high-touch surfaces in the audit: (a) desks and similar work tables; (b) cafeteria or breakroom tables; (c) restroom stalls and stall doors; and (d) sink fixtures and sink surroundings, especially in restrooms.

Other surfaces to consider but which are not required include: floors, drinking fountains, doorknobs or handles, doors, countertops, and handrails

113 ISSA, “A Clean Assessment,” 2022, issa.com/articles/a-cleanassessment/#:~:text=ATP%20meters.,organisms%20in%20the%20camera%20footage.

U.S. Green Building Council LEED v5 Reference Guide for Operations and Maintenance, April 2025 Launch Edition 244